20004433064 has 96 divisors (see below), whose sum is σ = 47732146560. Its totient is φ = 7772083200.

The previous prime is 20004433051. The next prime is 20004433121. The reversal of 20004433064 is 46033440002.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1576184 + ... + 1588824.

It is an arithmetic number, because the mean of its divisors is an integer number (497209860).

Almost surely, 2^20004433064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20004433064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23866073280).

20004433064 is an abundant number, since it is smaller than the sum of its proper divisors (27727713496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20004433064 is a wasteful number, since it uses less digits than its factorization.

20004433064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13039 (or 13028 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 26.

Adding to 20004433064 its reverse (46033440002), we get a palindrome (66037873066).

The spelling of 20004433064 in words is "twenty billion, four million, four hundred thirty-three thousand, sixty-four".